The 4D Web Companion: Links Mentioned:

Accessibility

For more suggestions, visit these pages on the main site:
Usability Links
Web Design Links
HTML Book Reviews
Web Design Book Reviews
Usability Book Reviews
CAST Bobby Testing Service
http://www.cast.org/bobby/
Making Web sites simpler for users with disabilities, such as poor vision, often improves the site for everyone. Accessibility is an increasingly important design factor for commercial and legal reasons. The CAST site provides free automated accessibility testing tools.
 
Vischeck Vision Simulator
http://www.vischeck.com/index.shtml
Roughly 20% of men suffer from some kind of color blindness. This novel site enables you to simulate how images appear to people with various kinds of color blindness. Images can be tested for free at the site, with a Java applet, or with a Photoshop plug-in.
 
Web Content Accessibility Guidelines 1.0
http://www.w3.org/TR/1999/WAI-WEBCONTENT-19990505/
Accessibility guidelines from the World Wide Web Consortium.
 

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